Automatic weighing machine



J. G. PIESER AND A. L. AND J. C. QUAST.

AUTOMATIC WEIGHIN G MACHINE. APPLICATION FILED NOV. 13. 1920.

Patented Sept. 5,1922.

15 SHEETSSHEET 1. 4

J. G. PIESER AND A. L. AND J. C. QUAST.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED NOV-13,1920.

1,428,253, PatentedSept. 5,1922.

I6 SHEETSSHEET 2.

kirfizaf Quasi.

ATTORNEY5 J. G. PIESER AND A. L. AND J. C. Q'UAST.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED NOV. 13- 1920.

J W ,m @Q vm H MW L A Wu mm. 1 M w 0 m. J a P QQN l. G PIESER AND A. L. AND LC. QUAST.

AUTOMATIC'WEIGHING MACHINE.

APPLICATION FILED NOV. 13. 1920.

1,428,253. v PatehmdSept. 5,1922.

' 1s SHEETS-SHEET 4. 7

7 Jag??? 1 ac (6567 /7L//7?5'3, kzfmam mu- J. G. PIESER AND A. L. AND J. C. Q UAST.

AUTOMATIC wmeuma MACHINE.

APPLICATION-FILED NOV 13, I920. PatentedSept. 5, 1922.

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INVENTOR 6 071 9'. faejef I dfz zrz 6. Quasi A'TTORNEY5 J. G. FIESER AND A. L. AND J. C. QUAST.

AUTOMATIC WEIGHING MACHINE.

APPLlCATION FILED NOV. 13, 1920.

Patented Sept. 5, 1922.

1'6 SHEETS-SHEET 6.

fizz/672122719:

J. G. PIESER AND A, L. AND J. C. QUAST.

AUTOMATIC WEIGHING MACHINE.

{\PPLICATIQN men NOV. 13, 1920.

1,428,253, PatentedSept. 5, 1922..

I6 SHEETSSHEET 7- J. G. PiESER AND A. L. AND J. C. QU AST.

AUTOMATIC WEIGHI NG MACHINE.

APPLICATION FILED NOV. 13, 1920.

1,428,253, I PatentedSept 5, 1922.

I6 SHEETS-SHEET 8.

z /ww "Q If 1. e. PIES ER AND A. L. AND J. c. QUAST. AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED NOV. 13, 1920.

1,428,253. Pate t dsept. 5, 1922..

16 SHEETSSHEET 9.

ATTORNEY5 1.6-. PIESER AND A. L. AND 1. c. QUAST.

AUTOMATIC WEIGHHVG MAQHINE. APPLICATION nuznnov. 1a, 1920.

Patenwdfiept. 5,1922. F

16 SHEETSSHEET l0.

L G. PiESER AND A. L. AND J. C. QUAST.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED NOV-13.1920.

16 SHEETS-SHEET 11.

Patented Sept. 5, 1922.

7Z/67Zf07l'53 Ja61J07Z 01 3 .I. G. PIESER AND A. L. AND J. QJ QUAST.

AUTOMATIC WEIGHING MACHINE.

APPLICATION HLED NOV. I3, 1920.

PatentedSept. 5,1922. 4

16 SHEETS-SHEET 12.

I I J I l l l II QQYQSS n W q.

1-. GJPIIESER AND A. L. AND J. c. QUAST.

AUTOMATIC WEIGHTNG MACHINE.

APPLICATION FILED NOV. 1 3. 1920.

Patented Sept. 5, 1922..

, 16 SHEETS--SHEET Iii Patented Spt. 5, 1922 I6 SHEETS-SHEET 1 359 J. G PIESER AND L. AND J. CLQUAST.

AUTOMATIC'WEIGHING MACHINE- I APPUCATION man uovrlq. 1920. 1.428,253.

J G. PHZSER AND A L; AND J. C. QUAST-' AUTOMATIC WElGHiNG MACHINE.

APPLlCATlUN FILED NOV.13. 1920.

1,428,253, PatentedSept. 5, 1922 16 SHEETS-SHEET 15,. g g Z06 2.9.5 {.50 0 ZZZ Patented Sept. 5, 192 2.

JACKSON e. rrnsnn, ARTHUR L. Q'UAST, annJoI-In o. QUAST, or CHICAGO, ILLINOIS;

I I I 1,428,253 UNITED STATES PATENT OFFICE.-

SAID ARTHUR L. QUAST AND SAID JOHN C. QUAST ASSIGNO RS T0 SAID PIESER.

AUTOMATIC WEIGHING MA IIINE;

Application filed November 13, 1920. Serial No. 423,879.

T 0 all whom 2'25 may concern.

Be it known that we, J AOKSON G. PIEsnR, Airrrrnn L. on, and Jenn C. Quasi, citizens or the United States, residing at Chicago, in the county of Cook and State follows, it may be stated at the outset that in the preferred embodiment there are employed: a continuously operating endless belt de livery-conveyer leading to the machine; a parallel continuously operating endless belt discharge-conveyer leading "from the machine; two scales each having a lead-platform or scale-pan interposed betweenthe delivery-conveyor and dischargecoureyer; a teed-chute located above each of the scale pans, and adapted to direct material into a carton or package standing on the scale-pan; a storage reservoir in con-.

nection with each of the feed-chutes adapted to supply material thereto means for periodically permitting a relatively large quantity (but less than a full charge) of material to flow quickly from each storage 'reseri'oir; means for preventing the depression of the scale-pan -from the impactor momentum of such relatively large quantity of material; means for slowly feeding a small stream of material from each reservoir after the discharge of the relatively large quantity; means for automatically and quickly closing a cut-off gate at the bottom of each teed-chute as soon as a quantity of material of predetermined weight has entered the carton underneath; means for automatically stopping the flow of the small stream or material from a reservoir when'a quantity of a predetermined weight has on tered a carton; means for pushing two em! cartons from the delivery-conveyor onto the twoscale-pans, at the same time ply of material to thelcarton.

dis placing two loaded cartons from the scale-pans onto the discharge-conveyor, such operation taking place automatically when both of the cartons have received charges of predeterm ned weights; means for resetting the mechanisms for operating the gates at the bottom of the feed-chutes; and

means for controlling andtimingthe operation of: the machine.

In general, the operation 1s as follows: (assumingthat two cartons are standing on the scale-pans and each has receivedvery nearly a full charge, additlonal material being supplied by a small slowly moving stream flowing from eachreservoir) as soon as one carton rece ves a charge of a predetel-mined weight, its scale-pan is depressed releasing a trigger mechanism which immediately closes the gate at the bottom of the feed chute and quickly cuts off further sup- This trigger mechanism also stops the flowof the small stream of material from the storage reservoir. Since thestream flowing from the storage reservoir cannot be positively and quickly stopped, there results an alter flow of a small quantity of material which is caught and retained in the feed-chute. The means for closing the gate at the bottom of the feed-chute upon a depression of a scalepan with the means for stopping the flow of the stream of material from the storage reservoir are made in duplicate, one operating in connection with each scale-pan, and each operating a releasing pawl controlling the operation oi": the entire machine. As

soon as the second carton has been fully charged, its scale-pan depressed, the gate at the bottom of the feed-chute closed, the flow of the stream of material from the storage reservoir stopped, and the second pawl controlling the operation of the entire ma chine releasechthe machine makes one complete operation.

During one such complete operation of the machine; two new empty cartons'are pushed from the 'deliev-ery-conveyer onto the scale-pans displacing the loaded cartons and pushing them onto the discharge-conveyer; the gates at the bottom of the I'eed chutes-are re-opened (the after flow from the previous cut-ofl' falling into the cartons) and the trigger mechanism controlling each is. reset; a relatively large quantity of material. is permitted to flow quickly from each storage reservoir into a carton (the material. th s supplied, however, is not sufficient to give quite a complete charge, and depression of the scale-pan from the impact or momentum of such material is prevented) and the supply of additional material is continued by a small slowly moving stream flowing from each storage reservoir.

In general the means for controlling and timing the operation of the machine, oper ates to limit the machine to one operation at a time, thus preventing continuous oper ation and serving to stop the machine in the event the other stopping means should fail or not have su'tlicient time to operate.

It will be noted from the foregoing that, since two cartons are operated upon simul taneously there necessarily is a duplication 01 many parts and operations. In this specification, in some instances, but one of each of such duplicated parts and operations will be described i detail.

The invention is illustrated in the preferred embodiment in the accompanying drawings, in which- Figure 1 represents an end elevational view of a machine embodying the invention; Fig. 2, a side elevational view of the machine; Fig. 3, an enlarged plan view; Fig. 4-, an enlarged elevational view of the lower portion of the machine; F 5, an enlarged elevational view of the upper portion of the machine, showing the same side as Fig. 4.; Fig. {3, an enlarged vertical seetional view talrcn as indicated at line 6 of Fig. 2; Fig. 7, an enlarged horizontal sectional view taken as indicated at line 7 01 Fig. 6; Fig. 8, a horizontal sectional. view taken as indicated at line 8 of 2, show ing the delivery-conveyor, discharge-conveyer, and scale-pans; Fig. 9, an enlarged elevational view of the upper portion of the machine showing the same side as Fig. 2; Fig. 10, an enlarged vertical sectional view taken indicated at line 10 of Fig. 9; Fig. 11, an enlarged elevational view showing the trip mechanism controlling one of the cut-oil gates at the bottom of a feed chute; Fig. 12, a vertical sectional view taken. as indicated. at line 12 of Fig, 11; Fig. 13, a vertical sectional view taken as indicated at line 13 of Fig. 12; Fig. 14:, a vertical sectional view taken as indicated at line 14 of Fig. 13; Fig. 15, a vertical sectional view taken. as indicated at line 15 of Fig. 11; Fig. 16, a vertical sectional view taken as indicated at line 16 of Fig. 15; Fig. 17, a horizontal sectional view taken as indicated at line 17 of Fig. 6, showing the change speed gears for use in varying the amount of material allowed to flow from each storage reservoir by one operation of the machinc; Fig. 18, a vertical sectional. view taken as indicated at line 18 of Fig. 1.7; Fig. 19, a vertical sectional view taken as indicated at line 19 of Fig. 7, showing the means for raising the vertically sliding gates which permit material to low from the storage reservoirs into the teed-chutes5 Fig. 20, an enlarged elevational view, showing a part or the mechanism controlling the movement of one of the feed belts used for causing a small stream of material to How from the storage reservoir; Fig. 21, an end elevational view 01' the mechanism shown in Fig. 20; Fig. 22, a vertical sectional view taken as indicated at line 22 of Fig. 21; Fig. 23, a view similar to Fig. 21 showing some ot the parts in altered positions; Fig. 24, a view similar to Fig. 23, showing some of the parts in altered positions.

In the preferred embodiment of the in.- vention, which is illustrated, A. represents the main frame which may be of any d. sire, ble construction. Preferably it 'lormcd largely of light structural steel. As indicated it is provided with corner posts which may comprise angle irons. The corner posts are suitably tied, S j1G1'f,ftl101lO l, and braced by means ot the horizontal cross members 31.

B represents a horizontally disposed Yer tically adjustable deliveryand discl'iargzjcconveyer supporting frame, comprising a pair of horizontal bars 33, located at oppo site sides of the main t'r'rame, and havin their ends slidably mounted. in the vertical slide. 3%.- il astened on the corner posts 30. The frame B is raised or lowered by means of vertical screws 35, whose upper ends are geared to two parallel horizontal shafts 313 connected by the chain and. adapted to be operated by the crank 38. The purpose ot providing for raising or lowering the frame I5 is to adapt the machine to dillerent size cartons, it being necessary that the cartons shall pass bene th the teed (,lllllltft-l 1-35) and 39 40 indicates the main drive shaft on which. is mounted the main drive pulle ll which may be driven in any desired manner. indicates a clutch of any desired term adapted. to be operated by the lever 4?; for the purpose of throwing the pulley 111 into connection with the shaft lll or permitting it to rotate loosely thereon. I

The sprocket ie: mounted on the shatt 4 adjacent the pulley ell. drives a chain if; extending across the entire width oi the machine near its lower end. which in turn drives the short horizmital shaft l-(S, geared at one end to the lower end 0! the vertical shaft at? which carri at its upper end the bevel gear 418 adapted to drivoin opposite directions the two bevel gears and arranged face to face and each meshing with the gear 4L8; the former operating a shaft 51 carrying a pulley upon which is mounted the endless belt delivery-conveyer 53, and the latter carrying a pulley 5%.- upon 156" and 56.

the, endless belts 53 and 55 are carried on loose pulleys (not shown) located near the machine suflicient tension being maintained to keep the belts substantially flat. Suitable idler pulleys may also be provided, if desired, under the belts in order to prevent undue sagging. Rotation of the shaft l0 as viewed in Figure 2 is clockwise, resulting in giving the upper span of the deliiery-conveyer belt a movement toward the pulley on the shaft :31, or into the machine, and the upper span of the discharge conveyer belt 55 a movement in the opposite.direction cr away from the pulley 54 and from the machine.

Empty cartons 56 56*, etc, are placed upon the delivery-conveyer belt 53 in any desired manner, whereupon-they will be carried into the machine until the first one meets an adjustable stop 57 whereupon the others following will be stacked up against it in line as shown in Figure 8, with the belt 53 sliding underneath. Suitable adjustable guides 58, 59. 60 and 61 are pr'ovided at the sides of and s ightly above the belt 58 to guide the inwardly moving empty cartons and prevent their displacement sideways. The stop 57 is so adjusted, and the cartons are of such a widtlnthat when the first empty carton is against the stop, itwill be directly opposite and between the pusher 62 and the load-platform or scale pan 68. Likewise, the third empty carton from the first one (55) will be directly opposite and between thepusher 64 and scale-pan65. Between the empty cartons 56 and 56 will be two empty cartons As shown in Figure 8, the scale-pans 63 and '65 are occupied by two cartons, 66 and 6 respectively.

The operation ofthe machine in moving the empty cartons from the belt 53 onto thescal -pans and the loadedcartons from the scale-pans onto the discharge-conveyor belt 55 is as follows. When each of the cartons on the scale-pans has received its full charge the machine is set in operation, as will be described more in detail hereinafter, causing both pushers G2 and 64 to be moved against the empty. cartons standing opposite them on the belt' 53, forcing such cartons off of the belt onto the on posite scale-pans and displacing the load cartons on the scale-pans from. the scale-- pans ontolthe discharge-conv yer belt 55 whereupon they are carried to the left (as viewed in FigureS, and out of the machine. Suitable. adjustable guides 68, 65k and are. mounted to the sides of and above the belt 55 in order properly to direct the movement of the loaded cartons and prevent their"displacement sideways,

"c It will be obvious, that as two empty caron the scale-pan 63 is afeed chute tons are pushed from the belt 53 onto the scale-pans, more empty cartons will move forward with the belt 53 to take their place.

As the loaded carton 56 is pushed onto the scale-pan 63 the'emptycarton 56 will take its place up against the stop 57, and all the other empty cartons on the belt will move forward correspondingly. Likewise, as the empty carton 56 is pushed onto the scale pan -65 the next succeeding empty carton (notshown on the drawings) on the belt will move forward and take its place.

Directly abovethe carton 6" as it stands 89 from which or through whiclir material is fed to the carton. The opening 72 at the bottom of the feed chute 39 is controlled b a horizontally sliding gate 7 Likewise the opening 76 at the bottom of the feed chute 39", directly above the carton 66 standing on the scale-pan 65 is controlled by a horizontally sliding gate 78.

When the carton 66 has received a charge of a predeterm ned weight the scale-pan 65 will be depressed, releasing a trigger mechanism and setting in motion parts which will cause the gate 78 to .be quickly sprung to the left viewed inFigurc 12) closing the hole 76 at the bottom of the feed chute 39 thus immediately cutting off a further supply of material to the carton 66 The operation of this trigger mechanism and parts in connection therewith will now be described more in detail and is as follows. The scale-pan 65 is supported by vertical rods 80 and'Sl which are hung at their upper ends on knifeedges S2 fastened on one end of the scale beams 83 which in turn are'adapted" to rock on the knife edges 84. The particular arrangement of the support forthe scale-pans, andthe construction of the scale beams form no part of the present invention as they are merelv adaptations of a common form of construction used in scales. The scale beams 83 are joined at their endsb'y ashort rod St carrying a single extension scale beam S3 upon which a'slidable weight 85 is mounted in any suitable manner in order to adjust the mechanismsothat a scale-pan will be depressed when the desired predetermined weight of material has entered the carton thereon. It is obvious that depression of the scale-pan 65, acting through thesupporting rods 81 will cause the scale beam 83 to rock on the knife edge 84 in the usual manner. As the end of the scale-beam 83 carrying the knife edge 82 is depressedwith the depression of the scale-pamthe end of the extension scale beam S3 rises. The end of 83 carries a short vertical member 87 on theupper end of which is mounted a semi-circular spring piece 88. Upward movement of 83? with consequent upward movement of the spring piece 88 permits upward movement of the leiit end (as viewed in Fig. 11) of the short pivo -c member 89 ca'rr ing on its upper side the screw 90 with its head in engagement with the lower side 01? the spring piece The member 89 is pivoted at 91 with its it end (as viewed in Fig. 11) terminating in a small shoulder 92 adapted to on We with tion 01. such shaft and descent of the hammer 96. Descent of the hammer 96 (see Fig. 12) permits it to fall on the end 9? of the rocker 98 which is pivoted at 99 camsing upward movement of the other end 100 of such rocker 9S. Normally in engagement with the end. 100 of the rocker 98 is the upper end 101 of a lever 102 pivoted at its lower end at 103 having near its central part a slot 104: in which is slidahly arranged a pin 105 projecting horizontally from a slidably mounted horizontally ar ranged rod 106 attached to the sliding gate 78. The rod 106 carries at left end (as viewed in Fig. 12) a stop 10? between which and the guide 108 is mounted a spiral. compression spring 109. As viewed in ig. 12. the gate 78 is at the limit of its movement to the right, leaving the opening 76 at the bottom of the feed-chute 39" open, and. the spring 109 is compressed. As explained he tore, depression or" the scale-pan 65 will cause the hammer 96 to fall causing depression of the end 97 of the member 98 and :1 raising of the end 100 with consecuient release of the upper end 101 of the lever 102 which, as shown in Fig. 12, acting on the pin 105, is holding the rod 106 and gate 78 to the right with consequent compression of the spring 109. Such release of the upper end of the lever 102 consequently will permit the spring 109 to expand causing the rod 106 and gate 78 to move quickly to the left (as viewed in F 12) closing the opening 76 at the bottom or the feed-chute 39 and immediately cutting off further supply of material to the carton thereunder. The operation of the gate controlling the opening 72 at the bottom oi the teed-chute 39 is similar, with a duplication of parts and consequently will not be described in detail.

As stated before, when the second carton of the two on the scale-pan has received its full charge and depressed its scale-pan. the machine will be set into motion in order to complete one operation. By one operation we mean the pushing of two new empty cartons from the deliverycrmveycr onto the scale-pans displacing the loaded cartons and pushing them onto the discharge-conveycr; the reopening of the gates at the bottom of the teed-chutes (the after flow from the previous cut-oil" falling into the cartons) with the resetting of the trigger mechanism cont-rolling each; the supply 01 a relatively large quantity of material quickly from each storage reservoir into a carton (the material thus supplied however not being sufficient to give a complete charge to a carton; and the depression of the scalepan from the impact or momentum of such material being prevented); and the continuing of a supply of additional material to each carton by a small slowly moving stream flowing from each storage reservoir.

W e will now describe in detail the manner in which the machine is so set into motion. The horizontally sliding gate 78 at the hottom of the feed-chute 39" has fastened to one side a wedge shaped member 1.10 so arranged that as the gate forced shut its slanting surface will engage the end of the pin 111 and force the same upward. The other end of the pin 111 is inserted in the horizontally arranged rotatable shaft 112 which has projecting from one end the arm 113. so that rotation of the shaft 112 caused hy such upward movement of the end of the pin 111 will raise the end of the arm 113 to which is fastened a connecting rod 114-. thus ra sing said connecting rod. The lower end of the rod 1141 is connected to one arm 115 of a hell crank pivoted at 116, the other end oi? such bell crank projecting upwardly as indicated by 117 with its upper end adapted to engage the pawl 118. The parts are so arranged that the closing ot the gate 78 with consequent raising of the pin 111, rotation of shaft 112, lifting of arm 113, connecting rod 111, and arm 1.15 of a bell crank carrying the upright arm 117 will cause said upper arm to swing to the left (as viewed in Fig. 43:), releasing the same from the pawl 118. The horizontally slidable gate controlling the opening to the feed-chute 39 has similar parts adapted to operate the arm 11.9 in a similar manner, excepting that the pin 120 corresponding to the pin 111 is adapted to be pressed downward by closing of the sliding gate instead of upward. This accomplished by inverting the wedge shaped member on the sliding gate 75 corresponding to the member 110 on the gate 78. Downward movement of the arm 120 is adapted to rotate the shaft 121, and lower the connecting rod 122 by means of the arm 123 depressing the arm 124: and throwing to the left (as viewed in Fig. 1) the corresponding upright arm 1.19.

As described in'detail above filling of one 

